The cLEMENCy Architecture

Good morning, and welcome to DEF CON 25.

We are pleased to announce the general availability of the cLEMENCy architecture developed by Lightning for DEF CON CTF. This release includes architecture documentation and an emulator with built in disassembler and debugger.

The documentation and emulator are signed with the GPG key available at,, and

No warranty or support is provided for the documentation or emulator.

Updated Versions

Links to documentation are updated both above and in this section. Older docs are purely for historical interest.

Original 2017-07-27 0900 Vegas Time
emulator emulator signature docs signature
Updated 2017-07-27 1159 Vegas Time
docs signature
Updated 2017-07-28 0900 Vegas Time
emulator signature